Insulator.



PATENTED DEG. 24, 1907.

A. L. SHBARS.

INSULATOR.

LPPLIOATION HLBD IAILS, 1907.

2 BEEETS-SEEET l.

5 E H x d anno/44 00@ fi/ a No. 874, 445. PATENTED DEC. 24, 1907.

A. L. SHEARS.

ULATOR.

APPLIOA PILED 3.5, 1907.

2 SHBETS-SEEET 2.

ALBERT L. SHEARS, OF SEATTLE, wAsHiNeron INSULA'EOE,

'o all whom 'it may coment:

Be it known that I, ALBERT L. SHEARS, citizen of the United States,residin at Seattle, in the county of King and btate of Washington, haveinvented new and useful lnp'ovenents in Insulators, of' which thefollowing is a specification.

My invention relates to insulators for elec- Iric wi'es, and consists inthe peculiar and :dvantageous construction hereinafter described andclaimed. v

in the acccinpanying drawings, forming v pau-t of this specfication:Figure 1 is 'a side clevation of an insulator eonstitutirn onecmhodiment of my invention; a wire eing shown as properly engaged withthe insulator. Fig. 2 is a lan view of the same. Fig. 3 is a vertical,danetrical section. Fig. 4 is a view similar' to Fig. '3, showinganother mode of conn'ectin the insulator to a support. Fi 5 is a p anview of a nodified insulator. ig. 6 is a similar view of anothermodified insulator. Fig.'7 is a section taken in the plane indieated bythe line 7-7 of Fig. 6 and showing the nanner in which the modifiedinsulator is connected with a yardarm or other sup ort.

Referring by etter to the said drawings, and more particularly to Figs.1-3 thereof: A is a support which may be a yard-arm or any other deviceto which m novel insulzttor iha be fastened, and is the insulater. T esaid insulator is generally square in outline, and is provided with avertical central bore a for the passage of a screw b which in sone casesmay be employed to connect it to the sup ort A. At its bottom or lowerend the insu at-or is provided with corner feet or bearings c andconcavities d; the latter being arranged intermediate the feet anddesigned to render the lower portion of the insulato' open so as toadmit fresh air "and permit water to drip away from the insulator. Thesaid insulator is also provided with an upwardly-tapered upper portione, lateral projections f in the under sides of which are grooves g, andSlots h a pair of which is designed to be emplo *ed in combiillustratedin Fig. 2.

nation with each projection the slots in said pair divergng from theprojection as The outer walls of the Slots h are beveled `or taperedupward and inward, as indicated by i, and best shown in Fig. 1, tofacilitate placingof a wire in the Slots, and this latter'is also thefunction of the upper tapered portion e of the insulator.

S'pcifition of ?Letters Patent.

Application filed March 5; 1907. Serial No 360.749.

Patented Dec. 24, 1907..

In the practical use of the insulator it is .designed to hold but twowires at one time; the plurality of slots h and projectionsf heingprovided in order that the insulator may not be rendered useless by thedisablementof one slot or one pro'ection. gaged with the insulator inthe man-ner shown-*that -is to say, it is placed underone projection orknob f and in "the groove q which holds it against outward displacemcnt,and is brought up and placed-in the Slots I), at opposite sdes of saidprojection and is pressed down in said Slots, whereby the insulatortakes secure hold of the wire so that the' same cannot move or be drawnendwise through the insulator. This as will be readily appreeiatedobviates the necessit of a lneman returnng and taki up slac of the wireafter he has fastened t e wire to the insulator and also obviatesthe`necessity of using extraneous means to fast-en the-wire to theinsulator. ever, that while the wire is securely held to and againstendwise movement throu h the insulator, the wire m ay be expeditious yand easily disenga ed from theinsulator by simfrom under the projectionfand then out of the other slot h. V

In the modification shown in Fig. 4, the insulator B' is provided with athreaded socket a" to receive a threaded wise similar to the insnlator Bshown in Fi s. 1-3.

The modifie( nsulator B of Figs. 6 and 7, has but one project-ion f andtwo Slots h shaped as shown. 'In connection with said insulator B isshown a mode of fastening the insulator, which like the other fasteningmeans described may be employed in the connection of any of theinsulato's illustrated. -The said mode of connection involves the port.A and the provision of a lu D on t e bottom of the insulator B, whic lugma be secured in the groove by driving a nail in the groove at the outerend of the lug. As

A wire is env in b' on the yard-arm or other support A', ut is other- 4The modified insulator B shown in Fig. 5 I

It will be noticed, howply bending the wire out of one slot h, then iand its upwardly-tapered upper portion e is provision of a dovetailgroove C in the su p i 2 &74,445

will le readily. eppreeiated, the groove may el" the parts embraeed inthe present enii hedinents of my invention in order to im- 1 do netdesire, however, to he understoed es eonfinng myself to the saidspecific eonstruet-en and relative &rr-angement of parts, as variouschanges in the form,

Construction and arrargement of parts may 15 be made n raet ee wthoutdeparture froni p the seope ot my nventen as defined in the elaimsappended.

Having described my inventien, what I l claim and desire te seeure hyLetters-Patent, he quickly and easily cut n a yard-arn, and i the lug onthe insulator may he us readily i An ineuhner lmvn :L lnteral mfeetie hl i] and wire-reeeiving HlUlS diverging frhin the I projeetieu; theeuler side ef the prejeetion end the euter sules ef the nuter wells eftluslots beng nehned Upward and nwanl, ml a else hevin a portion tepermior inelined uppart a dehnte understandng ef the sad eno odnents.

ward and nwzrd from the upper side of the pro eeten and the meuths ofthe wire-rni eeiving SlOlS.

In testnieny whereef l, have hereunte set,

my hand in presence ef two suhserihing wilnesses.

ALBERT L. SIIEARS. Witnesses R. W. EMMONS, W. F. MAGILL.

